There is a significant link between cancer of the lip, mouth, tongue and throat with the use of smokeless tobacco products. This link between smokeless tobacco and oral cancer is beyond question.
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Ears popping with swallowing or jaw movement, most commonly, is due to eustachian tube dysfunction.

The eustachian tube connects the middle ear with the back of the nose. The muscles of swallowing are also the muscles the open and close the eustachian tube. Colds, allergies, ear infection as well as other swelling and inflammation can lead to eustachian tube dysfunction (etd) and ear popping.
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Ear wax or cerumen due to its pH (acidic) and make up, protects the external ear canal against bacteria and fungus.

Most external ear infections are due to a disruption of this protective blanket. Ear wax only needs to be taken out when it occludes the ear canal and makes examination of the tympanic membrane difficult.
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